Mechanical movement



(No Model.) 2 Sheets-Sheet 1.

- 0. D. SIGSBEE.

MECHANICAL MOVEMENT.

Patented Nov. 18., 1890.

1.1V VEJV TOR WITNESSES TN: mom-us nuns cm, PHOTO-Unio wAsMmorcu, a c,

' UNITED STATES FFICE.

ATENT MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 441,112, dated November18, 1890.

Application filed March 10, 1890. Serial No. 343,429. (No model.) I

To all whom, it may concern:

Be it known that I, CHAnLEs DWIGHT SIGS- BEE, a citizen of the UnitedStates, residing at Annapolis, in the county of Anne Arundel and Stateof Maryland, have invented certain new and useful Improvements inMechanical Movements; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it'appertains to make and use thesame.

My invention consists of the mechanical movement hereinafter to be moreparticularly described and claimed.

In the drawings,Figure 1 is a plan View of one form of apparatusemployed in operating my mechanical movement. Fig. 2 is a section on theline 00 w of Fig. 1. Figs. 3 and 4: are plan views showing differentadaptations of my mechanical movement to the steering of ships. Figs. 5and 6 are diagrams explanatory of the movement, as embodied in Figs. 3and 4, respectively. Figs 7, 8, 9, and 10 are supplementary diagramsshowing different arrangements of my mechanical movement to illustratemore fully the scope of my invention.

In the several figures like parts are designated by the same letters andnumerals.

In many classes of machinessuch as typewriters, type casting and settingmachines, &cit is necessary to bring a large number of partsconsecutively over or underneath the same fixed point. To accomplishthis by mechanism which shall be simple, accurate in its movements, andof such a nature that the movements of its various parts can be readilycalculated, I have designed the apparatus in the form illustrated inFigs. 1 and 2.

To still further explain the importance of my invention, not only inrespect to its accuracy of registering, but in respect to thetransmission of power in different directions with certainty andrigidity of movement, I have designed two applications of the principleto ship-steering mechanism, as illustrated in Figs. 3 and 4.

A is a reciprocating plate moving in suitable guides A A, its motionbeing controlled by the pitman B and pin B with any suitable motivepower. In guides a a, preferably at? right angles to the guides A A,move the reciprocating pieces 0 O, terminating in the branching orspreading arms D D, set at any suitable angle to each other and thereciprocating rods 0 C, but preferably at ninety degrees and forty-fivedegrees, respectively, as shown, and provided with suitable guides E Efor retaining and controlling the third piece F. The third moving pieceF, having its two bearing-edges formed at the same angle of mutualinclination as the bearingedges of the branching parts D D, is fitted tothe guides E E by the dovetails Gr G, re spectively, in such manner asto admit of sliding contact between corresponding edges. It is evidentthat so long as the reciprocating pieces 0 O are held at rest the pieceF will be rigidly immovable in its guide atof the sliding pieces 0 C, orby said movement conjointly with a forward or backward movement of theother sliding piece, any point of the third piece F may be brought to aninfinite number of positions within certain limits. It, therefore, thepiece or plate F has a number of type or of matrices, as W, R, O, J, Y,&c., set therein, as indicated in Fig. 1, it will be possible, as isevident, to bring any one of the type or matrices under or over a fixedpoint Y, at which a plunger, press, hammer, or other operating-piece maybe placed to press down or imprint the type or matrix so brought to thefixed point.

A great many Ways for operating the sliding pieces 0 0 may of course bedesigned. In the apparatus that I have illustrated the reciprocatingplate A has a set of cam-grooves I, 2, 3 to 9, into which are meshedpins 1, 2, 3, to 9 of the sliding piece 0 and 1, 2, 3, to 9 of thesliding piece 0, whereby a definite motion is given to one or both ofthe sliding pieces 0 0, according to which groove or grooves control themotion of the.

sliding pieces through the meshing therewith of the corresponding pin orpins of said slides. It is evident, of course, that the plate A may bereplaced by a cylinder or a sector thereof without affecting thecharacter of the motion given the sliding pieces, and thatotherarrangements ofcamgrooves to suit the necessity of any particularcase can be arranged. The method of operation of my invention istherefore clear. For example, when the sliding pieces 0 C are both intheir original posidrawings but one groove is provided for each pin andits opposite pin, as 1 1. In Fig. 1

the full lines show the plate moved to theright beyond the ordinarilyeffective part of its stroke. The pins 5 5 are meshed in the straightgroove 5, and no movement of the slides C C will result; but by dottedlines in said figure the pin 9 is shown at 9 pressed down and engagingthe groove 9 whereby the slide 0 has been moved backward until the arm Dis at D 2 and has carried the piece F along the opposite arm D adistance J to 0, corresponding to the backward movement of the slide 0.Furthermore, the pin 3 is shown at 3 pressed down and engaging thegroove 3, whereby the slide 0 has moved forward until the arm D is at Dand'has carried the piece F along the opposite arm D a distance 0 to Ycorresponding to the forward movement of the slide 0. The combinedmovements of the slides C C have therefore resulted in moving the pieceF to F and the point-J to the point Y, and it is evident if theappropriate relations have been established in designing the placementof the pins, the grooves, and the types or matrices that by an operationsimilar to that which has been described any type, matrix, or point ofthe piece F, as J, may be brought to any point Y to further operate orbe operated upon, as may be desired.

It should be understood that certain changes in the construction of myinvention may be made without in any way affecting the essence of saidinvention. The sliding joints between the pieces or arms D D maybeformed differently arranged-for instance, the pins in any way so long asthe adaptability to simultaneous movement along both arms is maintained.The piece or plate F may be given any shape consistent with saidpurpose. The pieces 0 C may be operated by any other means than theplate A, and they may be placed on opposite sides of the piece F, as inFigs. 7 and 9, or converging, as in Fig. 10. The arms may be reversedwith respect to the pieces C O, as shown in Fig. 8, or but one arm maybe reversed, as in Fig.7. 'In the reciprocating plate A the arrangementof the cam-grooves may be varied-for example, they may be madesymmetrical with respect to that center line of the plate A which istransverse to their general direction, by which means each stroke of theplate A will produce a forward and backward stroke of the pieces Thepins 1 2, 850., 1 2, &c., maybe of one series may alternate with thepins of the other series-so that the pins of one ofthe pieces 0 O'shallbe opposite the intervals between the pins of the other piece. Thenumber of grooves may be increased so as to have a cam-groove for eachpin of both series, or

with the grooves increased in number the whole series of pins on one ofthe pieces 0 C may be placed in advance of the series on the otherpiece, 850.

The advantages of my invention consist in the fewness of its parts andjoints, the directness and certainty of its motion, and the ease withwhich the movement of the piece or plate F may be calculated for anygiven movement of the pieces 0 C, also in the wide range of itsapplication-as, for instance, to the steering of ships. Thus in Figs. 3and 4 the piece F is shown connected to the tiller K of the rudder-headL by means of the pin M, moving in the slot N. The lugs P P, attached tothe pieces C O, are provided with interior screw-threads-right andlefthanded, respectively-to engage and traverse the corresponding rightand left handed screws Q Q of the standing screw-shaft q. The saidscrew-shaft is operated by the wheel I), or it may be clutched to theshaft ofan engine. The rods 0 0 travel in the guides or a.

The operation of my invention is shown by the dotted lines of Figs. 3and 4:, supplemented by the diagrams, Figs. 5 and 6. In Fig. 4 thescrew-shaft having each thread uninterrupted, the rotation of the Wheelb advances one of the lugs P P and withdraws the other simultaneously. Areverse rotation of the wheel reverses the movement of both lugs. Thedotted lines show the lug P advanced to P the arm D to D the lug Pwithdrawn to P and the arm D to D while the piece F has been shiftedthereby to F bearing the tiller K to K at an angle of forty-five degreeswith -its original position. In Fig. 3 it is designed that one of thelugs P P shall remain fixed, while the other has a reciprocatingmovement along its corresponding part of the screw-thread Q or Q. Toeffect this purpose the threads Q Q are interrupted in that portionshown as occupiedby P and P and in such a relation that when one of thelugs P P is nearly on the point of leaving its thread, as at P, the pincl d on the corresponding piece 0 G engages one arm of the lever e,pivoted to the piece a, and presses the opposite arm of said leveragainst the pin cl d of the other piece 0 0, thereby advancing thatother piece 0 C and engaging its lug in turn with the thread of thescrew-shaft. The dot-ted lines of Fig. 3 show the lug P advanced to Pthe arm D to D while the lug P and the piece 0 are at rest. The piece Fhas advanced and shifted to F carrying the tiller K to K at an angle offorty-five degrees with its original position.

Having therefore described my invention, WhatI claim as new, and desireto protect by Letters Patent, is-- 1. In a mechanical movement,thecombination of the two branching reciprocating pieces and the thirdpiece attached to the two firstmentioned pieces by sliding joints andadapted to simultaneous motion along both joints, substantially asdescribed.

2. In a mechanical movement, the combination of the two branchingreciprocating pieces and the third piece attached to the twofirstmentioned pieces by sliding joints and adapted to simultaneousmotion along both joints, together with the grooved plate and the pinsengaging with said grooves, whereby the motions of the branchingreciprocating pieces are controlled, substantially as described.

3. Inamechanical movement, thecombina- CHARLES DWIGHT SIGSBEE.-Witnesses:

M. HENDGER, CHARLES HEMJE.

